Early phase (1902–1903) The Combat Organization's first terrorist act was the assassination of the Minister of the Interior,
Dmitry Sipyagin, on 2 April 1902 in
Saint Petersburg.
Stepan Balmashev, dressed in an
aide-de-camp's uniform, shot Sipyagin point-blank in the
Mariinsky Palace. This act demonstrated the perpetrators' disregard for the theoretical principle that terror was auxiliary to mass mobilization and highlighted their alienation from the party, as the PSR Central Committee formally adopted this independent action as a party deed and declared the Combat Organization part of the PSR only after its success. This initial victory opened the SR terrorist campaign. On 29 July 1902, , a woodworker, attempted to assassinate Prince
Ivan Obolenskii, governor of
Kharkov, wounding the city's chief of police instead. Gershuni had chosen Kachura for his worker status to lend ideological significance to the act and dictated the letter Kachura was to present. On 6 May 1903, assassinated Nikolay Bogdanovich, governor of the
Ufa province. The assassins managed to escape.
Peak activity under Savinkov (1904–1905) After Gershuni's arrest in May 1903,
Boris Savinkov became the leader. During this period, the organization focused on developing its technical capabilities, particularly bomb-making. This was dangerous work for the dilettantes involved.
Aleksei Pokotilov died on 31 March 1904 while assembling bombs in the
Northern Hotel in St. Petersburg. met a similar fate on 26 February 1905 in the Hotel Bristol. Both explosions caused enormous damage. Under Savinkov's command, the Combat Organization executed two of its most spectacular acts: 's assassination • The assassination of Minister of the Interior
Vyacheslav von Plehve on 15 July 1904.
Yegor Sazonov threw a bomb into Plehve's carriage, killing him instantly and seriously injuring Sazonov. This act, long regarded as a "question of honor for the party", tremendously enhanced the prestige of the Combat Organization. 's assassination • The assassination of
Grand Duke Sergei Alexandrovich, governor-general of
Moscow and uncle of the Tsar, on 4 February 1905.
Ivan Kaliaev, a close friend of Savinkov, hurled a large homemade bomb that killed the Grand Duke. The explosion was so powerful it was heard in remote corners of Moscow. Kaliaev was also injured, arrested, tried, and hanged. This was the first assassination of a
Romanov family member
since 1881. Kaliaev's hesitation to throw the bomb on an earlier occasion because the Grand Duke's wife and children were in the carriage fascinated contemporaries and became a classic illustration of the ethical problem of using violence for political ends. During this period, the organization also planned other attacks. An attempt on Minister of Justice
Nikolay Murav'ev on 19 January 1905 failed. A plot to assassinate Tsar
Nicholas II by , a dedicated but emotionally unstable terrorist, was aborted when a
ball the Tsar was to attend was cancelled. Leont'eva had proposed the assassination, and the terrorists, including Savinkov, enthusiastically approved without waiting for party leadership consent, highlighting their insubordination. These two major successes brought "plenty of money and no shortage of candidates to the Combat Organization". However, they marked the end of its "heroic period".
Decline and attempted revival (1905–1907) In March 1905, police, acting on information from SR agent Nikolai Tatarov, arrested seventeen members of the Combat Organization. According to Savinkov, "never again did it achieve such strength and such significance". Savinkov, with the remaining
boeviki like
Dora Brilliant, planned an assassination of General
Dmitri Trepov in St. Petersburg, but constant police surveillance forced its abandonment. Plots against
Grand Duke Vladimir Alexandrovich (held responsible for
Bloody Sunday), General
Nikolai Kleigels (governor-general of
Kiev), and Baron
Paul Simon Unterberger (governor of
Nizhnii Novgorod) also produced no results. When Nicholas II issued the
October Manifesto, the PSR Central Committee, despite protests from the Combat Organization and provincial
boeviki, ordered a halt to terrorist activity. The Combat Organization subsequently "disintegrated", with most terrorists dispersing to the provinces. However, Savinkov and other dedicated advocates of terror were not ready to comply. He nurtured fantastic plans, including arresting Count
Sergei Witte, bombing the St. Petersburg
Okhrana section, and destroying all electrical and telephone lines in the capital, though none materialized. 's carriage after the failed assassination attempt Following the suppression of the
Moscow uprising in December 1905, the new Central Committee elected at the First PSR Congress (December 1905–January 1906) declared its intention to resume terrorist activities. The Combat Organization was to be rebuilt with about thirty new members. Its primary targets were Minister of the Interior
Pyotr Durnovo and Vice Admiral
Fyodor Dubasov, governor-general of Moscow, with both acts planned before the opening of the
First Duma. Except for a revenge killing of the police informer Tatarov in
Warsaw on 4 April 1906, the attack on Dubasov was the Combat Organization's final, albeit partial, success. On 23 April 1906, , dressed as a naval officer, threw a bomb disguised as a box of candies under Dubasov's carriage. Vnorovskii and Dubasov's aide-de-camp were killed instantly; the governor-general was thrown from his carriage and escaped with minor injuries. With the opening of the First Duma on 27 April 1906, the PSR Central Committee, despite boycotting the elections, reaffirmed its intention to end terrorist activity. This indirectly saved Durnovo. The Combat Organization also failed to assassinate Minister of Justice
Mikhail Akimov and military figures General Georgii Min and Colonel Riman. These repeated failures, especially after the March 1905 arrests, led many party members to question the conduct of central terror. Following the dissolution of the First Duma in July 1906, the Central Committee again resumed terror, with Prime Minister
Pyotr Stolypin as the primary target. Persistent plotting against Stolypin failed, largely due to the difficulty of approaching him. An almost desperate Savinkov then attempted to assassinate , governor of St. Petersburg, but this also proved impossible due to constant police surveillance. Savinkov resigned as head of the combatants, along with Azef (then the PSR Central Committee representative in the Combat Organization). The Central Committee appointed SRs Sletov and Grozdov as replacements, but the
boeviki, consistent with their closed-circle mentality, refused to recognize these outsiders and chose to disperse. By the beginning of 1907, the Combat Organization had fallen apart again, this time for good in its former capacity. ==The Azef affair==